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- PDB-8fs4: Structure of S. cerevisiae Rad24-RFC loading the 9-1-1 clamp onto... -

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Entry
Database: PDB / ID: 8fs4
TitleStructure of S. cerevisiae Rad24-RFC loading the 9-1-1 clamp onto a 10-nt gapped DNA in step 2 (open 9-1-1 ring and flexibly bound chamber DNA)
Components
  • (DNA damage checkpoint control protein ...) x 2
  • (Primer strand ...) x 2
  • (Replication factor C subunit ...) x 4
  • Checkpoint protein RAD24
  • DDC1 isoform 1
  • Template strand
KeywordsCELL CYCLE/DNA / DNA damage repair / Rad24-RFC / 9-1-1 clamp / DNA clamp / alternative clamp loader / DNA damage signaling / DNA BINDING PROTEIN-DNA complex / CELL CYCLE-DNA complex
Function / homology
Function and homology information


meiotic DNA integrity checkpoint signaling / checkpoint clamp complex / DNA clamp unloading / Rad17 RFC-like complex / Gap-filling DNA repair synthesis and ligation in GG-NER / Elg1 RFC-like complex / Ctf18 RFC-like complex / DNA replication factor C complex / Polymerase switching / DNA clamp loader activity ...meiotic DNA integrity checkpoint signaling / checkpoint clamp complex / DNA clamp unloading / Rad17 RFC-like complex / Gap-filling DNA repair synthesis and ligation in GG-NER / Elg1 RFC-like complex / Ctf18 RFC-like complex / DNA replication factor C complex / Polymerase switching / DNA clamp loader activity / telomere maintenance via recombination / Translesion synthesis by REV1 / Translesion synthesis by POLK / Translesion synthesis by POLI / Translesion Synthesis by POLH / DNA replication checkpoint signaling / Activation of ATR in response to replication stress / Termination of translesion DNA synthesis / mitotic DNA replication checkpoint signaling / reciprocal meiotic recombination / mitotic intra-S DNA damage checkpoint signaling / recombinational repair / sister chromatid cohesion / mitotic sister chromatid cohesion / leading strand elongation / Gap-filling DNA repair synthesis and ligation in TC-NER / Dual incision in TC-NER / subtelomeric heterochromatin formation / mismatch repair / 3'-5' exonuclease activity / telomere maintenance / DNA damage checkpoint signaling / meiotic cell cycle / cellular response to ionizing radiation / nucleotide-excision repair / double-strand break repair via homologous recombination / DNA-templated DNA replication / double-strand break repair / site of double-strand break / double-stranded DNA binding / damaged DNA binding / chromosome, telomeric region / DNA repair / chromatin binding / ATP hydrolysis activity / DNA binding / ATP binding / nucleus / cytosol
Similarity search - Function
Ddc1 / DNA damage checkpoint control protein Rad17 / Rad17 P-loop domain / Checkpoint protein Hus1/Mec3 / Hus1-like protein / Checkpoint protein Rad17/Rad24 / Checkpoint protein Rad17/Rad24, fungi/metazoa / Rad1/Rec1/Rad17 / Rad9/Ddc1 / Repair protein Rad1/Rec1/Rad17 ...Ddc1 / DNA damage checkpoint control protein Rad17 / Rad17 P-loop domain / Checkpoint protein Hus1/Mec3 / Hus1-like protein / Checkpoint protein Rad17/Rad24 / Checkpoint protein Rad17/Rad24, fungi/metazoa / Rad1/Rec1/Rad17 / Rad9/Ddc1 / Repair protein Rad1/Rec1/Rad17 / Replication factor C subunit 3, C-terminal domain / RCF1/5-like, AAA+ ATPase lid domain / Replication factor C, C-terminal / Replication factor C C-terminal domain / : / DNA polymerase III, delta subunit / : / DNA polymerase III, clamp loader complex, gamma/delta/delta subunit, C-terminal / : / ATPase family associated with various cellular activities (AAA) / ATPase, AAA-type, core / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / DNA / DNA (> 10) / DDC1 isoform 1 / DNA damage checkpoint control protein RAD17 / Checkpoint protein RAD24 / Replication factor C subunit 5 / Replication factor C subunit 3 / Replication factor C subunit 4 ...ADENOSINE-5'-DIPHOSPHATE / PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / DNA / DNA (> 10) / DDC1 isoform 1 / DNA damage checkpoint control protein RAD17 / Checkpoint protein RAD24 / Replication factor C subunit 5 / Replication factor C subunit 3 / Replication factor C subunit 4 / Replication factor C subunit 2 / DNA damage checkpoint control protein MEC3
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.94 Å
AuthorsZheng, F. / Georgescu, R. / Yao, Y.N. / O'Donnell, M.E. / Li, H.
Funding support United States, 3items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM131754 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM115809 United States
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: bioRxiv / Year: 2023
Title: Structures of 9-1-1 DNA checkpoint clamp loading at gaps from start to finish and ramification to biology.
Authors: Fengwei Zheng / Roxana E Georgescu / Nina Y Yao / Michael E O'Donnell / Huilin Li /
Abstract: Recent structural studies show the Rad24-RFC loads the 9-1-1 checkpoint clamp onto a recessed 5' end by binding the 5' DNA on Rad24 at an external surface site and threading the 3' ssDNA into the ...Recent structural studies show the Rad24-RFC loads the 9-1-1 checkpoint clamp onto a recessed 5' end by binding the 5' DNA on Rad24 at an external surface site and threading the 3' ssDNA into the well-established internal chamber and into 9-1-1. We find here that Rad24-RFC loads 9-1-1 onto DNA gaps in preference to a recessed 5' DNA end, thus presumably leaving 9-1-1 on a 3' ss/ds DNA after Rad24-RFC ejects from the 5' gap end and may explain reports of 9-1-1 directly functioning in DNA repair with various TLS polymerases, in addition to signaling the ATR kinase. To gain a deeper understanding of 9-1-1 loading at gaps we report high-resolution structures of Rad24-RFC during loading of 9-1-1 onto 10-nt and 5-nt gapped DNAs. At a 10-nt gap we captured five Rad24-RFC-9-1-1 loading intermediates in which the 9-1-1 DNA entry gate varies from fully open to fully closed around DNA using ATPγS, supporting the emerging view that ATP hydrolysis is not needed for clamp opening/closing, but instead for dissociation of the loader from the clamp encircling DNA. The structure of Rad24-RFC-9-1-1 at a 5-nt gap shows a 180° axially rotated 3'-dsDNA which orients the template strand to bridge the 3'- and 5'- junctions with a minimum 5-nt ssDNA. The structures reveal a unique loop on Rad24 that limits the length of dsDNA in the inner chamber, and inability to melt DNA ends unlike RFC, thereby explaining Rad24-RFC's preference for a preexisting ssDNA gap and suggesting a direct role in gap repair in addition to its checkpoint role.
History
DepositionJan 9, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 14, 2023Provider: repository / Type: Initial release
Revision 1.1Jun 19, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Checkpoint protein RAD24
B: Replication factor C subunit 4
C: Replication factor C subunit 3
D: Replication factor C subunit 2
E: Replication factor C subunit 5
F: DNA damage checkpoint control protein MEC3
G: DNA damage checkpoint control protein RAD17
H: DDC1 isoform 1
I: Template strand
J: Primer strand 1
K: Primer strand 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)415,74120
Polymers413,12311
Non-polymers2,6179
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, 2D averages showed the protein-DNA complex formed successfully
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 2 types, 2 molecules AH

#1: Protein Checkpoint protein RAD24


Mass: 62721.418 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: RAD24, YER173W, SYGP-ORF60 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P32641
#8: Protein DDC1 isoform 1


Mass: 69787.500 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: DDC1 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: A0A8H4BUG7

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Replication factor C subunit ... , 4 types, 4 molecules BCDE

#2: Protein Replication factor C subunit 4 / Replication factor C4 / Activator 1 37 kDa subunit


Mass: 36201.039 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: RFC4, YOL094C, O0923 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P40339
#3: Protein Replication factor C subunit 3 / Replication factor C3 / Activator 1 40 kDa subunit


Mass: 37841.051 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: RFC3, YNL290W, N0533 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P38629
#4: Protein Replication factor C subunit 2 / Replication factor C2 / Activator 1 41 kDa subunit


Mass: 39794.473 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: RFC2, YJR068W, J1808 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P40348
#5: Protein Replication factor C subunit 5 / Replication factor C5 / Activator 1 40 kDa subunit


Mass: 39993.582 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: RFC5, YBR087W, YBR0810 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P38251

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DNA damage checkpoint control protein ... , 2 types, 2 molecules FG

#6: Protein DNA damage checkpoint control protein MEC3


Mass: 53207.797 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: MEC3, PIP3, PSO9, YLR288C, L8003.15 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: Q02574
#7: Protein DNA damage checkpoint control protein RAD17


Mass: 45637.527 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: RAD17, GI527_G0005737 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: A0A8H4BW58

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DNA chain , 1 types, 1 molecules I

#9: DNA chain Template strand


Mass: 15389.855 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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Primer strand ... , 2 types, 2 molecules JK

#10: DNA chain Primer strand 1


Mass: 6464.172 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#11: DNA chain Primer strand 2


Mass: 6084.940 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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Non-polymers , 3 types, 9 molecules

#12: Chemical
ChemComp-AGS / PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / ATP-GAMMA-S / ADENOSINE 5'-(3-THIOTRIPHOSPHATE) / ADENOSINE 5'-(GAMMA-THIOTRIPHOSPHATE) / ADENOSINE-5'-DIPHOSPHATE MONOTHIOPHOSPHATE


Mass: 523.247 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C10H16N5O12P3S / Comment: ATP-gamma-S, energy-carrying molecule analogue*YM
#13: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mg
#14: Chemical ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Comment: ADP, energy-carrying molecule*YM

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Details

Has ligand of interestN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

Component
IDNameTypeEntity IDParent-IDSourceDetails
1Rad24-RFC-911 clamp-DNACOMPLEX#6-#110MULTIPLE SOURCES
2DNACOMPLEX#9-#111SYNTHETICsynthetic DNA
3Proteins complexCOMPLEX#6-#81RECOMBINANT
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12synthetic construct (others)32630
23Saccharomyces cerevisiae (brewer's yeast)4932
Source (recombinant)Organism: Saccharomyces cerevisiae (brewer's yeast)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1900 nm / Nominal defocus min: 1300 nm
Image recordingElectron dose: 64 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
CTF correctionType: NONE
3D reconstructionResolution: 2.94 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 347098 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.01121910
ELECTRON MICROSCOPYf_angle_d0.91129793
ELECTRON MICROSCOPYf_dihedral_angle_d14.4263234
ELECTRON MICROSCOPYf_chiral_restr0.0413451
ELECTRON MICROSCOPYf_plane_restr0.0043565

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